73290487 has 4 divisors (see below), whose sum is σ = 73314640. Its totient is φ = 73266336.

The previous prime is 73290457. The next prime is 73290499. The reversal of 73290487 is 78409237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73290487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73290407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6738 + ... + 13855.

It is an arithmetic number, because the mean of its divisors is an integer number (18328660).

Almost surely, 2^73290487 is an apocalyptic number.

73290487 is a deficient number, since it is larger than the sum of its proper divisors (24153).

73290487 is a wasteful number, since it uses less digits than its factorization.

73290487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24152.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 73290487 is about 8560.9863333614. The cubic root of 73290487 is about 418.4875438017.

It can be divided in two parts, 732 and 90487, that added together give a palindrome (91219).

The spelling of 73290487 in words is "seventy-three million, two hundred ninety thousand, four hundred eighty-seven".